EP 4089769 A1 20221116 - ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND METHOD AND DEVICE FOR MANUFACTURING ELECTRODE ASSEMBLY
Title (en)
ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND METHOD AND DEVICE FOR MANUFACTURING ELECTRODE ASSEMBLY
Title (de)
ELEKTRODENANORDNUNG, BATTERIEZELLE, BATTERIE, HERSTELLUNGSVERFAHREN UND VORRICHTUNG ZUR ELEKTRODENMONTAGE
Title (fr)
ENSEMBLE ÉLECTRODE, ÉLÉMENT DE BATTERIE, BATTERIE, ET PROCÉDÉ ET DISPOSITIF DE FABRICATION D'ENSEMBLE ÉLECTRODE
Publication
Application
Priority
CN 2021083434 W 20210326
Abstract (en)
An embodiment of the present application provides an electrode assembly, a battery cell, a battery, and a manufacturing method and device for the electrode assembly, which belong to the technical field of batteries. The electrode assembly includes a negative electrode plate and a positive electrode plate. The negative electrode plate includes a negative active material layer located in the straight area, and the positive electrode plate includes a positive active material layer located in the straight area. A first direction is perpendicular to an axial direction of a winding structure. The negative active material layer includes a negative electrode main body portion and negative electrode edge portions located on both sides of the negative electrode main body portion, and an active substance capacity per unit area of the negative electrode main body portion is greater than an active substance capacity per unit area of the negative electrode edge portion; and/or, the positive active material layer includes a positive electrode main body portion and positive electrode edge portions located on both sides of the positive electrode main body portion, and an active substance capacity per unit area of the positive electrode main body portion is less than an active substance capacity per unit area of the positive electrode edge portion. The electrode assembly of this structure can effectively reduce the risk of lithium plating and improve the safety of the battery.
IPC 8 full level
H01M 4/66 (2006.01); H01M 4/04 (2006.01); H01M 4/13 (2010.01); H01M 4/139 (2010.01); H01M 10/04 (2006.01); H01M 10/0525 (2010.01); H01M 10/0587 (2010.01); H01M 10/42 (2006.01); H01M 50/103 (2021.01); H01M 50/204 (2021.01); H01M 50/46 (2021.01)
CPC (source: EP US)
H01M 4/02 (2013.01 - US); H01M 4/0404 (2013.01 - EP); H01M 4/13 (2013.01 - EP); H01M 4/139 (2013.01 - EP); H01M 10/0431 (2013.01 - EP); H01M 10/0525 (2013.01 - EP); H01M 10/0587 (2013.01 - EP US); H01M 10/4235 (2013.01 - EP); H01M 50/103 (2021.01 - EP); H01M 50/204 (2021.01 - EP); H01M 2010/4292 (2013.01 - EP); H01M 2220/20 (2013.01 - US); Y02E 60/10 (2013.01 - EP); Y02P 70/50 (2015.11 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
US 2022311056 A1 20220929; CN 115413379 A 20221129; CN 115413379 B 20240112; EP 4089769 A1 20221116; EP 4089769 B1 20240522; WO 2022198682 A1 20220929
DOCDB simple family (application)
US 202117563309 A 20211228; CN 2021083434 W 20210326; CN 202180006850 A 20210326; EP 21809899 A 20210326